C2c

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  • Created by: Joanna
  • Created on: 15-01-12 17:10

C2c: Metals and Alloys

Copper

Copper is extracted from naturally occurring copper ore by heating it with carbon:

copper oxide + carbon ---> copper + carbon dioxide

2CuO +    C ---> 2Cu + CO2

Electrolysis

Electrolysis uses an electric current too break down compounds into simpler substances. 

In electrolysis, electricity is passed through a liquid called an electrolyte e.g. copper sulphate solution, to make simpler substances.

HT: Electrodes are used to allow the electricity to flow through the electrolyte:

  • The anode (positive electrode) is made of impure copper.
    • Cu…

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